Picture-projecting machine.



C. F. JENKINS. PICTURE PROJECTING MACHINE. 1 APPLICATION FILED OCT. 17.I916. 1,3Q2,8Q() Patented May 6, 1919.

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PICTURE PROJECTINYG MACHINE.

APPLICATION FILED OCT. 11. 1916.

1,302,800. Patented May 6, 1919. I 2 SHEET EEEEEEE 2.

UNITED STATES PATENT orrrcn.

CHARLES FRANCIS JENKINS, OF WASHINGTON, DISTRICT OF COLUMBIA, ASSIGNOBTO I THE GRAPHOSCOIE COMPANY, OF WASHINGTON, DISTRICT OF COLUMBIA, ACOR- PORATION OF DELAWARE.

PICTURE-P303 ECTIN G MACHINE.

Specification of Letters Patent.

Patented May 6, 1919;

To all whom it may concern:

Be it known that I, CHARLES FRANCIS JENKINS, a citizen of the UnitedStates, and resident of Washington, in the District of Columbia, haveinvented certain new and useful Improvements in Picture-ProjectingMachines, of which the following is a specification, reference being hadtherein to the accompanying drawing. In icture projecting devices it ishighly desirable to combine in a small space the entire apparatus forprojecting motion pic tures and other-pictures, such apparatus includingelectric illuminating devices, a film operating mechanism, an electricmotor, with all the electric apparatus arranged to meet all municipaland underwriters regulations, and further to have the apparatus suchthat it may be operated conveniently and safely by those having littleskill, and

, may be adaptable for use under all condi-- tions likely to be met.With these ends in view, I provide a hollow metal standard or base, andupon it a film box carrying a rigidly connected normally horizontaltable is pivotally mounted for rocking adjustment. Upon the table aremounted in alinement an illuminating and projecting apparatus, a filmmoving apparatus, and an electric motor, with a device normally out ofline but adapted to be moved at'will into the line of the projectinglight beam and to deflect the latter at right angles, before it reachesthe film apparatus. p

In the accompanying drawings,

Figure 1 is a side elevation of the apparatus.

Fig. 2 is a plan view of the same device.

Fig. 3 shows in side elevation the central portion of the devices ofFigs. 1 and 2-.

Fig. 4 shows the standard, looking from the right in Fig. 1, arts beingbroken away to show devices wit in.

In these figures, 1 represents a hollow metal post or base preferably ofcast metal, 2 a metal door normally closing a lateral opening in thebase, and 3 a metal film reel box pivotally supported on an axis 4 nearone side of the post so that the box may have side to side swingingadjustment. buch adjustment is made by means of arms 5, 6 projectingfrom the box and base, respectively, rod carrying adjusting nuts 9.

F lxed to the upper side of this box, which is preferably polygonal, isa relatively long narrow horizontal table 10. and upon this is anilluminating apparatus 11 mounted in any suitable way for adjustmentlongitudinally of the table. On the table aoove the film box 3 is fixeda film-moving apparatus 12 and upon the table still farther from theilluminating devices is an'electric motor 13. In the space between thedevices 11 and 12 a standard 14: is fixed to the table and in thisstandard is adjustably secured a transverse sliding rod 15 upon whichare secured a beam-deflecting device 16and a stereopticon lens 17, bothin the horizontal plane of the beam, and the device 16 being normally,or when the .machine is projectmg motion pictures, at one side of thepath of the beam. It is thus possible to slide the deflecting device 16into the path of the beam and thus deflect the latter so that it willpass through the lens 17 and fall upon substantially the same portion ofthe screen which receives motion pictures from the apparatus at 12.

Withm the standard 1 are mounted a rheostat 18 and a switch 19 operatedby a handle 20, crank 21 and connecting link 22. Access to these devicesis had by means of the door 2 which is normally secured againstaccidental opening by a screw 23, so that there may be, ordinarily, nopossibility of fire or of shock in operating this portion of theapparatus. 'Conductors 24 pass to and from the rheostat through a smallaperture in the standard and lead upward therefrom, along the under sideof the table and into the casing 11. The light from within the casing 11passes through an exterior detachable tube 25 and thence to the filmdevices 12. When stereopticon views are to be shown, this tube ispreferably detached and pictures are inserted in ways 26 onthe casing11.' 'Since the ictures of either kind are projected transversely to thetable and to the axis 51, rocking the table on this axis obviouslyvaries the height of thte illuminated Y may be shown at the proper pointwhether and connected by a pivoted threaded '100 area upon the screen sothat pictures the apparatus is on, above, or below the horizorrtal planeof the center of the screen.

The operator while standing alongside the standard 1 may reach andmanually control all the various mechanisms described, the motor switch27 like all other ordinary control devices being upon or accessible fromthe side of the apparatus seen in Fig. 1.

The standard 1, closed, metal film box 3 and film feeding apparatus 12are in vertical alinement' and the intervening metal table is providedwith very narrow film slots 28 through which film may ass to rollers 28'at the bottom of the casing. Combustion is not continued downwardbetween the rollers and through the slots to the film box 3, andthus'ignition at the exposure point at most destroys a foot or two offilm without seriously heating the casing.'

What I claim is: e v

1. The combination with a hollow metal standard, a metal table supportedby the standard, an electric illuminating? device mounted on the table,icture projecting apparatus mounted on the table in alinement with saiddevice, a rheostat and switch inclosed in the standard, means withoutthe standard for manually operating the switch, and suitable conductorsfor putti the illuminating device and rheostat in t e circuit controlledby the switch.

2. The combination with a central support, of a narrow transverselyrocking table thereon bearing approximately alined, motor devices,motion picture and single picture mechanisms both arranged to pro ecttransversely with respect to the tables axis, and illummating devices,and means for holding the table in any position to which it may berocked; whereby mere rocking adjusts all parts together to project atany point above or below the normal horizontal plane of the light rays.

3. The combination with a closed film reel box adapted to contain bothoutgoing and incoming film and a table secured to the top of the box, ofa casing for film feeding devices secured upon the table directly abovesaid box, the parts separating the interiors of the box and casing beingprovided with two adjacent, parallel narrow combustionprohibiting slotsthrough which film passes fr'om'and to the interior of the box, a rollerparallel to the slots and extending across the space between them, andtwo other co-acting rollers lying upon opposite sides of the rollerfirst mentioned and forming a second guard against transmission ofcombustion; whereby the outgoing and incoming film is guided andsafeguarded by the three rollers.

4. The combination with a suitable standard, of a storing and deliveringfilm box hinged to the top of the standard and provided with means forprogressively rocking it about its hinge axis and locking it in eachposition, a narrow suitably slotted table fixed to the top of the boxwith its axis parallel to the hinge axis and bearingall necessarypicture projecting mechanisms arranged to project laterally with respectto the table; whereby the entire apparatus above the standard is set asa unit to project at any desired point above or below its normal plane.

In testimony whereof I hereunto aflix my signature.

CHARLES FRANCIS JENKINS.

